.tip{
    position:absolute;
    left:200px;
    top:200px;
    background:#666;
    color:#fff;
    font-size:12px;
    padding:3px 5px;
    border-radius: 2px;
    text-align:center;
    transition:all .3s;
    opacity: 0;
}
.tip .small{
    width:0px;
    hegiht:0px;
    border:5px solid #666;
    border-left:none;
    border-top-color:transparent;
    border-bottom-color: transparent;
    position:absolute;
    left:-5px;
    top:5px;
}
